我有一个显示项目列表的对话框,我需要能够编辑/删除此列表中的项目,因此我将上下文菜单放入其中,因此当用户长按项目时,他们可以选择他们想要的内容要做(编辑或删除项目)。
问题是当选择上下文菜单中的项目时,onContextItemSelected
永远不会被调用。
我检查了创建对话框片段的活动是否可以获得回调,但这不是为什么它没有被调用?你不能在对话框中做一个上下文菜单吗?
public class TypesDialogList extends DialogFragment implements LoaderManager.LoaderCallbacks<Cursor>,OnItemClickListener,OnCreateContextMenuListener{
ListView lv;
SimpleCursorAdapter mAdapter;
private int EDIT_TYPE = 1;
private int DELETE_TYPE = 2;
OnEditType mType;
public Dialog onCreateDialog(Bundle state){
final View v = getActivity().getLayoutInflater().inflate(R.layout.layer_dialog_layout, null, false);
lv = (ListView)v.findViewById(R.id.listView1);
lv.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
lv.setOnItemClickListener(this);
lv.setOnCreateContextMenuListener(this);
return new AlertDialog.Builder(getActivity()).setView(v).setPositiveButton("Add Type", new OnClickListener(){
public void onClick(DialogInterface dialog, int which) {
}
}).setTitle("Type's").create();
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo){
super.onCreateContextMenu(menu, v, menuInfo);
AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) menuInfo;
long id = info.id;
if(id > 3){
menu.setHeaderTitle("Type Menu");
menu.add(Menu.NONE, EDIT_TYPE, 1, "Edit");
menu.add(Menu.NONE, DELETE_TYPE, 2, "Delete");
}else{
Toast.makeText(getActivity(),"Cannot edit type",Toast.LENGTH_SHORT).show();
}
}
@Override
public boolean onContextItemSelected(MenuItem item) {
super.onContextItemSelected(item);
AdapterView.AdapterContextMenuInfo oMenuInfo = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
long id = oMenuInfo.id;
if(item.getItemId() == EDIT_TYPE){
}else if(item.getItemId() == DELETE_TYPE){
}
return true;
}
}
答案 0 :(得分:30)
对于仍在寻找解决方法的任何人,我刚刚通过创建匿名OnMenuItemClickListener
来解决此问题,该匿名onContextItemSelected(MenuItem item)
委托回@Override
public void onCreateContextMenu(ContextMenu menu, View view, ContextMenuInfo menuInfo) {
// Creation/inflate menu here
OnMenuItemClickListener listener = new OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
onContextItemSelected(item);
return true;
}
};
for (int i = 0, n = menu.size(); i < n; i++)
menu.getItem(i).setOnMenuItemClickListener(listener);
}
并在菜单中的所有项目上进行设置。
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